We supplied these custom length shoulder bolts to our audio device manufacturer.  The shoulder bolt is essentially an off-the-shelf 1/4 X 1 shoulder bolt with 10-24 rolled thread in 18-8 stainless steel material.  Our customer was unable to use this version as-is due to the combined length of threaded portion and the machined fillet preceding it.  In order to make use these parts that combined length had to be at .24″  +/- .01″.  As a relatively simple operation we ran these parts through a cut and chamfer operation to get them to the correct length.  Lead time for this operation was 1-2 weeks from receipt of the off-the-shelf version.